“There is apparently a vetting process,’’ he said. “You can address those questions to the Romney campaign...There's only one person that knows that and that’s Governor Romney. I would suggest I am not the person to ask.’’

The popular governor and chairman of the Republican Governors Association has been on countless speculative lists of potential vice presidential contenders.

“Apparently there’s vetting going on I don’t think it’s appropriate for me to talk about it,’’ he said.